Athelia may refer to:

• Athelia (disease), a congenital condition in humans where one or both nipples are absent
• Athelia (fungus), a genus of basidiomycete fungi in the family Atheliales

• 685 AD
• 685 CE
• 685 (year)
• 686 AD
• 686 CE
• 686th Air Force Band
• 686 (year)
• (6875) 1994 NG1
• 687 AD
• 687 CE
• 687 (year)
• 6888th Central Postal Directory Battalion
• 688 AD
• 688 CE
• 688 (year)
• (6892) 1978 VG8
• (6893) 1983 RS3
• 68 95 99.7
• 68 95 99.7 rule
• 689 AD
• 689 CE
• 689 (year)
• 68AA2
• 68 (album)
• 6-8 Argyle Place, Millers Point